It is unknown in what order Philip's nine children were born in. So a guess is being made here: Elizabeth, Jacob, John, Abraham, George, Mary, Catherine, Susan and Margaret.

One of Elizabeth's sisters married Charlie Baum.

Phillip Mayer family of 11

Phillip Mayer family of  5

Phillip Mayer family of  5 also Chris

Phillip Mayer family of 3 also Henry & J

Phillip Mayer

Jacob   Mayer

Jacob   Mayer Jr.

Phillip Mayer family of 8 also Jacob & J

Phillip Meyer family of 3 males 1 female

Phillip Meyer family of 3 males 3 female

Phillip Meyer family of 2 males 2 female

Phillip Meyer family of 4 males 3 female

Phillip Meyer family of 4 males 3 female

Phillip Meyer family of 3 males 4 female

Phillip Meyer family of 2 males 5 female

Phillip Meyer family of 6 males 1 female

Phillip Meyer family of 4 males 3 female

Phillip Mayer family 6 males 5 females

According to J.B. Linn's history of Centre county PA, Philip may have had younger brothers Jacob, Henry (born 10-15-1764 died 05-17-1871) and Michael, and younger sisters Barbara (married Michael Motz) and Catherine (married John Meyer who came to Centre county in 1794). Henry was a colonel, Michael was the first blacksmith in Centre county but he later moved away. Their father was Jacob Meyer who lived in Middle Creek in Snyder county PA. Their grandparents came to Pennsylvania from Germany and settled on a creek they named Mill Brook in Lebanon county PA. It went on to say that Philip was a soldier in the Revolutionary War under Capt. John A Schaeffer's company and that Philip died in 1831. It did not ever mention if Philip moved to Ohio or not, which the ancestor Philip did, sometime around 1800. The death in 1831 is  very possible, however, as that would make Philip about age 73 when he died.

Historical
1758: England - British colonel James Wolfe Issues the Wolfe Manifesto
1758: United States - James Monroe born
1759: France, England - French commander Louis-Joseph de Montcalm and British commander James Wolfe die during the Battle of the Plains of Abraham
1760: England - George III became King of Britain
1760: Iran - Zand dynasty founded in Iran
1761: France, India - Battle of Panipat, France defeats Maratha Empire
1762-1796: Russia - Reign of Catherine the Great of Russia
1763: India - Treaty of Paris ends Seven Years War and Third Carnatic War
1763: Omdoa - Kingdom of Mysore conquers the Kingdom of Keladi
1765: United States, England - Stamp Act Introduced into the American colonies by the UK Parliament
1766-1799: India - Anglo-Mysore Wars
1767: Burma - Burmese conquered the Ayutthaya kingdom
1768-1774: Russia, Turkey - Russo-Turkish War (sixth of ten), Russian victory
1768: Nepal - Gurkhas conquered Nepal
1769-1770: New Zealand, Australia - James Cook explores and maps New Zealand and Australia
1769-1773: India - The Bengal famine of 1770 killed one third of the Bengal population
1769: United States - James Watt invents the steam engine, this begins the Industrial Revolution
1769: United States - Spanish missionaries established the first of twenty one missions in California
1770-1771: Czech Republic - Famine in Czech lands killed hundreds of thousands
1770: Australia, England - James Cook claims the East Coast of Australia (New South Wales) for Great Britain
1770: United States - Boston Massacre occurs when British troops fire into a crowd of snowball throwers, killing five. John Adams later defends in court the British troops involved, this actually boosts John Adams' reputation because it demonstrates to the British that the Americans are fair
1771: England - Richard Arkwright and his partners build the first water-powered mill at Cromford
1771: Russia - The Plague Riot in Moscow
1772-1779: England, India - Maratha Empire fights Britain and the forces of Raghunathrao during the First Anglo-Maratha War
1772-1795: Poland - The Partitions of Poland ended the Polish-Lithuanian Commonwealth and erased Poland from the map for 123 years
1772: Denmark - Reformer Johann Friedrich Struensee executed in Denmark
1772: Poland - Partitions of Poland marks the end of the Polish-Lithuanian Commonwealth
1772: Sweden - Gustav III of Sweden stages a coup d etat, becoming almost an absolute monarch
1773-1775: Russia - Pugachev Rebellion was the largest peasant revolt in the history of Russia
1773: India, China - East India Company starts operations in Bengal to smuggle Opium into China
1775-1783: United States, England - American Revolutionary War
1775: United States - Daniel Boone begins to clear the Wilderness Road to Kentucky
1775: globe - John Harrison H4 and Larcum Kendall K1 Marine chronometers are used to measure longitude by James Cook on his Second voyage (1772-1775)
1776: Germany - Order of Illuminati founded by German philosopher Adam Weishaupt
1776: United States - United States Declaration of Independence is written by Thomas Jefferson and others then is adopted by the Second Continental Congress meeting in Philadelphia
1778: United States - James Cook becomes first European on the Hawaiian Islands
1778: Vietnam - Tây So-n Dynasty established in Vietnam
1779-1879: England, South Africa - Xhosa Wars between British and Boer settlers and the Xhosas in South African Republic
1780: Peru - Outbreak of Indigenous rebellion led by Túpac Amaru II in Peru
1781-1785: Austria - Serfdom abolished in the Austrian monarchy (first step, second step in 1848)
1781: United States, Spain - Spanish settlers founded Los Angeles
1783: Iceland - Famine in Iceland caused by the eruption of the Laki volcano
1783: Ukraine, Russia - Russian Empire annexed the Crimean Khanate
1783: United States, England - The Treaty of Paris formally ends the American War of Independence
1785-1791: Russia - Imam Sheikh Mansur, a Chechen warrior and Muslim mystic, led a coalition of Muslim Caucasian tribes from throughout the Caucasus in a holy war against the Russian Invaders
1785-1795: United States - Northwest Indian War between the United States and Native Americans
1787-1792: Russia, Turkey - Russo-Turkish War (seventh of ten), Russian victory
1787: Japan - Kansei Reforms Instituted in Japan by Matsudaira Sadanobu
1787: Sierra Leone - Freed slaves from London founded Freetown in present-day Sierra Leone
1787: United States - United States Constitution was written in Philadelphia and submitted to the states for ratification, the Bill of Rights ratified four years later
1788-1789: Brazil - Inconfidencia Mineira, conspiracy against the colonial authorities in Brazil
1788: Astralia - First European settlement established in Australia at Sydney, Australia is the only Western country with no Bill of Rights
1788: France - First French Quaker community established in Congenies
1788: United States - New Hampshire ratifies the United States Constitution as the ninth state, and by the terms of Article VII, the constitution goes into effect
1789-1799: France - The French Revolution
1789: Canada, England, Spain - Great Britain and Spain dispute the Nootka Sound during the Nootka Crisis
1789: Unites States - George Washington unanimously elected President of the United States, he serves two four-year terms
1790: Belgiu, - United States of Belgium proclaimed following the Brabant Revolution
1790: Poland, germany - Establishment of the Polish-Prussian Pact
1791-1795: globe - George Vancouver explores the world during the Vancouver Expedition
1791-1804: Haiti - The Haitian Revolution
1791: Canada - The Constitutional Act (Or Canada Act) creates the two provinces of Upper and Lower Canada in British North America
1792-1815: France - The Great French War started as the French Revolutionary Wars which lead into the Napoleonic Wars
1792: Sweden - King Gustav III of Sweden was assassinated by a conspiracy of noblemen
1792: United States - New York Stock & Exchange Board founded
1793-1796: France - Revolt in the Vendee against the French Republic at the time of the Revolution
1793: Canada - Upper Canada bans slavery
1793: United States - The largest yellow fever epidemic in American history killed as many as five thosand people in Philadelphia—roughly 10% of the population
1794: Iran - Qajar dynasty founded in Iran after replacing the Zand dynasty
1794: Poland - Polish revolt
1794: United States, England - The Jay Treaty concluded between Great Britain and the United States which returns to the U.S. the Western outposts in the Great Lakes, and, commerce between the two countries is regulated
1795: France - The Marseillaise officially adopted as the French national anthem
1795: Georgia - Mohammad Khan Qajar razes Tbilisi to the ground
1795: United States, Spain - The Pinckney Treaty between the United States and Spain granted the Mississippi Territory to the U.S.
1795: United States - Kamehameha I of the Island of Hawaii defeats the Oahuans at the Battle of Nu uanu
1796-1804: China - The White Lotus Rebellion against the Manchu Dynasty in China
1796: Africa (western) - Mungo Park, backed by the African Association, is the first European to set eyes on the Niger River in Africa
1796: Ceylon, England, Naterlands - British ejected Dutch from Ceylon
1796: England - Edward Jenner administers the first smallpox vaccination, smallpox killed an estimated 400,000 Europeans each year during the 18th century (including five reigning monarchs)
1796: France - Battle of Montenotte, engagement in the War of the First Coalition, first victory of Napoleon Bonaparte as an army commander