Christine, I believe I might have some additional information on the Altemus family. I am related through my grandmother and connected with someone who had researched this side of the family. I believe it is the same family even though I have the spelling as Altimos for some of the family. My records show that Hans Peter show was born in 1700 had a brother and sister. His brother was Johann Friederich Altimos born in 1716. The sister was Maria Catharina Altimos - born 1707. Johann married a woman named Susannah - but I have no further information on her. Johann and Susannah had 6 children:
Juliana Margaret Altemus b. 3/11/1760 Germantown PA
died 1848 (this is the line I have followed).
Susanna Altemus b. 1748
Johann Frederick Altemus b. 1751
David Altemus b 1755
Leonard Altemus b. 5/26/1763 Germantown, PA
Johann Jacob Altemus b 5/22/1765 Germantown, PA

I also have information that Johann Friederick 's father was Wilhelm Altimos born 1675. He married Anna Caecilia Reinmuller in 1700 in Offenbach Germany. She was born about 1676 and died November 30, 1734.

I hope you find this information helpful - any feedback you might have would certainly be welcome