More information regarding Sgt Lane's last resting place here;
https://www.cwgc.org/find-war-dead/casualty/47593/lane,-alfred-ernest/

Despite it's overwhelming size the Boulogne Cemetery is beautifully kept and well worth visiting, just one of a few in the Boulogne area due to the close proximity of several WW1 hospitals.

https://www.cwgc.org/find-a-cemetery/cemetery/4800/boulogne-eastern-cemetery/