Background info to help in the search................
John Young Watson Lindgberg - Scottish Baptism
https://www.familysearch.org/ark:/61903/1:1:XYT6-CYBFather - Captain Otto Magnus Lindberg - Scotland, National Probate Index (Calendar of Confirmations and Inventories), 1876-1936 (See probate below)
Ancestry - Transvaal Province, South Africa, Estates Death Notice Index, 1855-1976
John Young Watson Lindberg - Death Year 1942 - Death Country South Africa
Title Transvaal Estates Death Index (Master of the Supreme Court, Pretoria)
South Africa, Transvaal, Civil Death, 1869-1954 - 14 February 1942 Roodepoort, Transvaal, South Africa
https://www.familysearch.org/ark:/61903/1:1:Q5WS-SQPZhttps://www.familysearch.org/ark:/61903/3:1:3Q9M-C9BY-C1PD?view=index&personArk=%2Fark%3A%2F61903%2F1%3A1%3AQ5WS-SQPZ&action=viewProbate • South Africa, Transvaal, Probate Records from the Master of the Supreme
https://www.familysearch.org/ark:/61903/1:1:QP8P-WTMBJohn Young Watson Lindberg - Age 73 years
Birth Year (Estimated) 1869 Birthplace Dundee Scotland
Death Date 14 February 1942
Death Place Maraisburg
Relationship to Head of Household Deceased
Event Type Probate Event Date 1942 Event Place Transvaal, South Africa.
https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSSR-FSTF-3?view=index&personArk=%2Fark%3A%2F61903%2F1%3A1%3AQP8P-WTMB&action=viewUnited Kingdom, World War I Service Records, 1914-1920
https://www.familysearch.org/ark:/61903/1:1:QVBP-N5PTUK, World War I Service Medal and Award Rolls, 1914-1920