The Railway Siding of Centlivres was probably named in honour of John Centlivres Chase, a British settler who emigrated to South Africa in 1820, and served as Civil Commissioner of the Uitenhage District from 1849 until his retirement in 1863. He was a renowned cartographer, statistician and author. He was best known for his Natal Papers that were published in 1843. He later passed away in this place, which had become a quant Village, leaving His name a a legacy! 

Geolocation
25° 27' 36", -33° 38' 24"
References

New Dictionary mf South African Place Names