chapterwise references with LaTEX and biblatex

I needed chapterwise references for my thesis. The suggestions at
https://tex.stackexchange.com/questions/345163/references-at-the-end-of-each-chapter
did not work with the "Cambridge" template on Overleaf.

Could try
https://stackoverflow.com/questions/2765209/latex-bibliography-per-chapter

or use TU Delft template which has per chapter references.

https://latex.org/forum/viewtopic.php?t=26123 

suggested latextemplates.com

used that, and found:

The chapterbib package and biblatex are incompatible

Then got this - 

https://tex.stackexchange.com/questions/87414/per-chapter-bibliographies-in-biblatex 

That seemed to work - \begin refsection etc 

% Chapter 1

\begin{refsection}

\chapter{Introduction} % Main chapter title

---snip----

% and at the end, where we want the references

\renewcommand{\bibname}{References}

% 20190501 - HN

% added this renewcommand to change  the title Bibliography to References

\printbibliography

\end{refsection}