Michael made his will 29 January 1783. He added a codicil 29 June 1786, and the will was probated 18 July 1786. He had died 1 July 1786, and was buried in the Roxborough Burial Ground where he owned lot No. 62. His wife Catharina Geiger Righter survived him 10 years. She also is buried in the Roxborough Burial Grould, but her stone is not so well preserved as Michael's. The year of death was 1796. Michael, in his will, had provided that his wife "Caterina" was to have bed, bedstead, and bedding, 5 pounds in gold or silver, free use of her room with liberty of passing to and from it and wood for firewood brought to her door. Michael's house became the property of his son John, so his mother lived with him. The interest of one third part of the estate was to be paid to her by the children and grandchildren who inherited it, yearly, during her life.

The division of the estate among the 9 children who survived him, and the 5 children of his daughter Elizabeth, who had died before him, in equal shares either in land or money, was to be made by 3 persons, selected by his sons George, Michael, and John, each of them to choose "one discreet and reputable freeholder" to make the valuation and division. Those who received land were to pay money to those who got none as the said freeholders thought right.[Will Book T, 345 #205 of 1786] The men chosen for this difficult task were Daniel Thomas and Matthew Holgert, both of Germantown, and Anthony Cook of Roxborough Township. The Articles of Agreement, putting the results of their work in legal form, were signed 9 March 1787. The division of the land was a complicated one as it broke the tract into 11 lots. Seven children received land and each one had lot on the "Reding" (Reading or Ridge) Road. John and Michael received lots extending from Ridge Road to the Schuylkill River, Peter,Caspar,Margaret,Daniel, and George shared the land between Ridge Road and the Wissahickon Creek, in the location of which a one perch wide lane (5 1/2 yds), probably now Hermit Lane, was important, Margaret being the only one of the daughters to receive land. Daughters Catherine Levering and Mary Heft received 87 pounds, 2 shillings 8 1/2 pence each, and the five children of the third daughter Elizabeth Lare, dec'd, shared the same sum among them.[Deed Book D-18, 632]

The children of 4 Michael and Catharine (Geiger) Righter were:

Caspar Righter/George Righter/Peter Righter/Michael Righter/Daniel Righter/John Righter/Catharine Righter/Mary Righter/Margaret Righter and Elizabeth Righter.