Sorry for discluding many information. Here is what I got.
George Engels/Englis was born in Patras, Greece on May 16th, 1885, but due to different calenders, his birth date was also listed as June 12th, 1885.
Katherina Leo / Katherine Mary nče David was born somewhere in Turkey / Syria on October 20th, 1890.
According to some family trees and sources, her parents were Leoq David & Sarah nče Ellis.
George immigrated around October 18th, 1903 on the SS Cambroman. There is a SS Cambroman which arrived at the port of Boston, Massachusetts on october 30th, 1903 but I am still not sure.
Some Family trees say George and Kartherina married on June 6th, 1906 but they do not list any sources.
They lived in Pawtucket (located in Rhodes Island)
They then went on to have many children including Peter (1908), Leo George (1910), William (1912), Sophia (1915), Frederick (1918),
Christrine (1921), James Goerge (1926), Steven (1929).
All the children were born in Rhodes Island.
Later in life, the Engels along with their children moved to Los Angelos, California around 1925.
Nothing really happened until 1977, when George Engels died on October 28th, 1977 and his obituary states that his religion was Greek Orthodox.
Later in 1983, Kartherina Mary Engels passed away on August 28th, 1983. Again, like George it lists her religion as Greek Orthodox.
I am thinking to contact the Local Churches of Patras for George's Baptism Record but I have an issue about what could be his Greek name.
Also with Katherina Leo David, I don't know her Turkish / Syrian name and also the exact location of birth.
This is why if someone could find them in the US Passenger (Manifest) lists, that would help as they list their parents or relatives names and where they are from which could be very important to find more about their ancestors and place of birth.
Thanks for anything in advance.