(P21)	(Q6581097)
(P31)	(Q5)
(P40)	(Q126926183)
(P106)	(Q29182003)
(P569)	Friday, March 1, 1861 (P854) http://roglo.eu/roglo?lang=en;p=gustave+isaac;n=halphen;
(P570)	Friday, September 15, 1922 (P854) https://drive.google.com/file/d/0B71JfRYrV2lYcVFCOHIzWEVUZDQ/edit?resourcekey=0-Jb-A-V3U_-g3UA2Ik3PN2A

External Links

(P2600)	6000000020226678004
(P5629)	0B71JfRYrV2lYcVFCOHIzWEVUZDQ
(P7929)	p=gustave+isaac;n=halphen;