Birnbaum

Felix Birnbaum his wife, Hinda Kleiner, and their seven children, arrived in Montreal, and rented a flat next to the Rosen family; no one has been able to tell whether they knew or knew of the Rosen family from Galicia, or from contacts they had made during their voyage to Montreal.
Years later, Hymie Rosen, like Dave, Joe and Stanley Birnbaum, became a pharmacist and opened a pharmacy on Queen Mary Road.
The Richman family, who also knew the Rosens, moved in next door.
The two Richman boys, Morrie and Lou, who later changed the family name to Richmond, who had come to Montreal from Kyiv, went to school with Davey and Joey Birnbaum.

David 'Davey' Birnbaum contracted tuberculosis, and although he recovered, he lived with the resiual effects, a heart murmer and clubbing of his fingers.
Franklin Roosevelt suffered from clubbing, a condition refers to the shape of the fingernails and the most distal part of the finger itself, usually associated with a chronic disease, such as lung disease, or liver disease, and may be seen in heart failure, but is more classically associated with cyanotic heart disease, in the fingers of his right hand..

David Isaac Birnbaum did did not earn his degree in Pharmacy, as he had to go to work to provide money for the family.
Years later, the university granted him a certificate, signifying his successful studies in Phamacy.

David and Joe Birnbaum acquired a pharmacy, which they named Birn's Pharmacy, on Villeneuve Street, east of Park Avenue.
The brothers purchased a second pharmacy, on Bernard Avenue, corner of Querbes, Outremont.
They sold the pharmacy on Villeneuve Street, corner Querbes; the building is still there, and it is still a pharmacy, Shore's Pharmacy.
The brothers opened a Birn's Pharmacy at Graham Boulevard, corner of Rockland Boulevard; on what is now a park, the Frankie Building having been torn down.

The marriage of David Isaac Birnbaum and Lily 'Gerry' Grobstein was registered by Reverend M. Mandelcorn.

David Isaac Birnbaum was issued Canadian Naturalization certificate #38669.

David Isaac Birnbaum was diagnosed with Parkinson's Disease, in his latter years, which limited certain activities, but he was able to enjoy most of his usual activities, with few restrictions.
He was put on medication for several years, which reduced the trembling, but the condition began to tire him and limit his mobility.

David Isaac Birnbaum suffered a heart attack, and was taken to Saint Mary's Hospital, where he was put in Cardiac ICU for several days.
He spent weeks in the hospital, where he died of heart failure.