There were 5 brothers and 3 sisters. William Henry, Walter Bligh & Lemuel Upton, were all in Christian service in the Congo.
The picture here https://www.scripture-truth.org.uk/images/committee.jpg shows the commitee of The Scripture Truth magazine in about 1909: H J Vine, J T Mawson, H P Barker, F B Hole, H R Jameson, Mr Huntley, J Murray, Capt J W Smith, Hamilton Smith, Mr Bell, R Dunn, Robert Whyte and Walter Westcott.
Can anyone confirm, if Walter Westcott is sitting in the bottom row on the far right?
Thank you, Jonathan!
Here is a short biography about Walter Bligh Westcott in German: www.soundwords.de/walter-bligh-westcott-1871-1936-a16559.html